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. 2014 Jul 11;12:39. doi: 10.1186/1477-5956-12-39

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Copyright © 2014 Rajcevic et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Immunohistochemical staining of tumor biopsy and biopsy spheroid sections. HE, haematoxylin & eosin staining. Cytokeratin, staining with anti-CK20 (Krt20) antibody. Vimentin, staining with anti-vimentin (Vim) antibody. Ki-67, staining with anti-Ki-67 (Mki67) antibody. CD68, staining with anti-CD68 antibody. See Materials and Methods for details.